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2 Si CHAPMAN' Sheets-Sheet 1 Peatl Machine` 4 No. 68,044. Patented Aug. 27, 1867.

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2 Sheets-Sheet 2. S. CHAPMAN.

Peat Machine.

N0. 68,044. Patented Aug. 27, 1867.

Inventor.'

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SAMUEL CHAPMAN, ONF NEWARK, NEW JERSEY.

Lette-rs Patent N. 68,044,.catcd August 27, 1867.

IMPROVEMENT IN KI'LNS FOR PDRYING AND PREPARING PEAT.

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TO ALL WHOM IT MAY CONCERN:

Be it knowuthat I, SAMUEL CHAPMAN, of Newark, in the county of Essex, and State of New Jersey,have invented a new and usei'ul Improvement in Kilns for Drying Peat and other4 substances under'pressure; and I :lo hereby declare that the following isv n full, clear, and exact description of the same, reference being had to the annexed drawings, making part'of this sp'ecii'ication, in which- Figure 1 is a perspective view.

Figure 2 is a vertical transverse section.

Figure 3 a horizontal section and plan of the heating pipes and furnace, and

Figure 4 a vertical transverse section of the drying-frame and drip.

The same letters are employed in all the figures in the indication of parts which are identical.

My invention consists in, first, the mode of drying peat and other substances, so that by the continuous i application of heat in an air-tight chamber the water may be expelled from the substances, the steam thus generated used for compressing by its pressure the substances as they are diminished in bull: by the evaporation of the water, and finally the oleaginons, rcsinous, or other analogous fluids be extracted second, in so arranging an air-tightdryhouse that itmay contain a heating apparatus, suitable platforms or frames for supporting the articles to be operated upon, a metallic roof, so arranged Oas to act as a condenser for condensing the steam evolved, and means for withdrawing thc water thus formed without permitting the'escape of the heated air; third, in the arrangement and combination of parts specifically set forth inthe claims hereinafter to be stated.

A represents the walls of the kiln, which-I prefer to make double, with air-spaces, and so constructed as to be airtight, the door or doors being so attached that by means of packed joints the chamber may be air and steam-tight, the door and other parts being strong enough to resist the pressure of the steam generated, as will be described hereinafter. The peat, or other` material to be dried, is placed upon a car, B, composed of a forams inated plate resting upon trucks, 2,1unning upon tracks, B1, or it may be placed upon platforms resting uponthe frame C supported upon the car, the frame being provided with troughs, C', by which the oleaginous and other materials forced from the peat, and other materials under treatment, may be collected. D is a metallic roof, acting also as a condenser,by`which the vapor filling the chamber will be condensed, licwing along the troughs D connected with one another, in such manner that the water condensed shall be collected Vin the Well E between the walls of the drying-chamber. In order to draw o this Water, and at the same 'time to keep the chamber perfectly air-tight, the pipe F is introduced, leading from `the bottom 4to the top of the well, where it passes through the walls and discharges o,u tside,the 110WA being regulated by the stop-cock F The depth of the well must be such that the weight of the-column of water in the pipe F will counterbalance the pressure of the steam on the surface ot' water in the well, so that the Water ascondensed will iiow oi` through that pipe, but4 the escape of the heated air yfrom the chamber be prevented. G is a safety-valve, weighted to sustain the pressure of steam it is intended to maintain in the chamber, and no more. The heatis applied by means of the stove or furnace H, the Walls ci' which will not permit the entrance of air into the chamber, the draught passing through the stove or furnace escaping at H. I preferV to conduct the dues through the walls A, so as to utilize as much as possible the heat. 1 A; circulation of'air and an equal distribution of heat through the chamber are maintained by means of a system of pipes, I, which open: alternately on each side ot' the stove or furnace; near the floor, and passing through the upper part of the stove or furnace are curved upwards, discharging the current of air flowing through them into the chambeif Another' set of pipes, K, in like manner passing through the stove or furnace, form the grate-bars, on which the fuel is placed. By this nieansI obtain a heat suihciently great to convert the water, contained in the peat or other article to be dried, into steam of pressure suiiicieutlygreat to compress the peat'as it is dried into Va compact mass. l I

When it is desired to continue the drying process suicientiy to drive thc oleaginous and analogous sub1 stances from the material to be dried, the frame Gis used to sustain them, and the heat being continiied after the water has been evaporated and passed out of the chamber, these substances being released by the action of the heat will oi'v along the troughs C"and becollected, so as to flow through the ppeL into the well M, from which they will be drawnA by the same means as already described for the .Waterwell and pipe F. When all the steam has been condensed and expelled from the, chamber, the stop-cock F should 4be closed, to prevent theescape of the heated air. I

What I claim as my invention, and desireto 'secure by Letters Patent, is-

1. The mode of dcsiccating, compressing, and extracting tlie oleaginous, bituminous, resinous, or other similar constituents from peat and other substances, by the continued application of heat only in a tight chamber, substantially las Set forth.

2. The combination, Within an air-tight chamber, of a heating apparatus, suitable supports for the material to be desiccated, and a condenser for collecting and carrying olf thc Water evaporated, substantially as and for the purpose set forth. v

3. The combination of the roof D, troughs D', well E, and pipe F, substantially as and for the purpose set forth.

4. The combination of the stove or furnace H and pipes I, arrangecliin relation to the air-tight chamber and one another, substantially as set forth.

5. The combination of the stove or furnace I-I and pipes K, arranged in relation to the air-tight chamber and oncanother, substantially as set forth.

6. The combination and arrangement of the drying-frame C,- troughs C', and Well M, substantially as and for the purpose set forth. l i

7'. The process for dryin` and compressing peat, by the continued application of heat alone, in an air-tight chamber, substantially as set forth.

In testimony whereof I have signed my name to this specifcationin the presence of two subscribing witnesses.

SAMUEL CHAPMAN.

Witnesses:

R. MASON, D. P. HoLLoWAv.' 

